Distributing device for centrifugal separator-bowls.



PATENTED OCT. 9, 1906.

. N. s. BijK. DISTRIBUTINGIDBVIGE FOR OBNTRIFUGAL SEPARATOR BOWLS.

APPLICATION FILED APR.17,1905.

2 SHEETS-SHEET 1.

PATENTED OCT. 9, 1906. N. S. B61! R CBNTRIP UGAL SEPARATOR BOWLS. R.17,1905.

DISTRIBUTING DEVICE r0 2 sums-suns? 2.

APPLICATION FILED AP UNITED STATES,

PAIEN r oFFioE NILS SVENSSON BoK, OFSTOCKHOLM, SWEDEN.

DISTRIBUTING DEVICE FOR CENTRIFUGAL SEPARATORFBOWLS.

Specification of Letters Patent.

Patented Oct. 9, 1900.

application filed April 17,1905. 's riainoiasaoqoi To all whort it may concern:

Be it known that-I, NILs SvENssoN 136K, a"

subject of the King of Sweden, and a resident of Stockholm, Sweden, have invented new; and useful Improvements in Distributing Devices for-Centrifugal Separator-Bowls, of

' tor-bowls the interior of which by means of ing a liner is divided in several sep arating-spaces.

The object of the invention is to provide means by which the liquid to be introduced into the said separating-spaces will be dis tributed in such manner that each separating-..

space will receive a quantity of liquid corresponding to its separating capacity.

The invention consists; briefly, in the combinatioiifwith a centrifugal separating-bowl having a liner therein dividing the liquid-- space of the bowl into several separatingspaces and ,a central orificed pipe, of an orificed non-rotating distributer in the said central pipe. The orifices of the said non-rotating distributer or the cross-sectional area of the latter should .be decreasing in the direction of the flow of liquid in the distributer in order to obtain the desired distribution of the liquid in the orifices of the central pipe surrounding the distributer.

In the accompanying drawings 1 have shown several constructions embodying my. invention. 1

Figure '1 shows in-vertical section a centrifu 'al separating bowl having a distribut- Fig. 2 is a section .online AB in Fig.1. Fig. 3 shows acentral vertical section of another form ofthe nonrotating distributer. Fig. 4 is a cross-section on line E Fin Fig- 3. Fig. 5 shows a third form of the nonrotating distributer,

likewise in central vertical section. Fig. 6 is a cross-section on line G H in Fig. 5. Fig. 7. shows a central vertical section of a fourth form of the non-rotating 'distributer. .Fig. 8 is a cross-section'online I K in Fig. 7, and Fig. 9 is a cross-section on line L M in Fig. 7. Like reference-numbers indicate same or corresponding parts throughout all the figures. r

Referring to Figs. 1 and 2, my distributing device is applied to a separator-bowl 5, havevice;-constructed in accordancewith my present invention.

ing timer of the. well-known Alpha-Laval type,.consisting of conical plates. 14, superposed on one another. In the center of the owl is inserted a hollow and at the lower end closed cylinder: 1, havin outlet-openingsx2 and adapted to be detac ably connected to the usual inlet-pipe extendifng from the" res-' the said inletipe and reservoir'be'ing. not shown. The iq-uid to be separated islet ervoir containing theliquid' to be separated,

into the'distributing-cylinder 1 under a pres- 'suresuflicient to press out during a unit of time the predetermined total quantity of the liquid to be separated through the distributing-openings 2. The latter are in this case with respect to their-positions and working cross-sections so chosen that likewquanitities of-the liquidto be separated will in a unit of time be pressed out through the passages 2, that are placed on parts of the wal of the distributing-cylinder of the same axial lengths. The resistance against the outflow of the liquid necessary for the uniform. distribution is thus located in the said' short distributingpassages. By means of the arm 4, a part of which is shown in Fig. 1 and which is secured to the frame of the machine in any convenient nianner, the distributing-channel is held in its central position in the bowl. The distributer thus does not partake in the' rotationof the bowl.

' Bymeans of the distributing device just described it is possible to fulfil, with respect' to the uniform distribution of the liquid in front of the inlet-openings 27 of the liner shown in Fig. 1, as an example, the conditions for a uniform feeding of the thin separating-s aces between the plates 14, the said spaces eing supposed to be equivalent as to the separating capacity. This is due to the fact that the outflows on the sufficient small parts of the height of the distributer are quantitatively equal per unit of tiIne,-on accountwhereof no axial flow takes lace in the narrow axial channels 28 of the wings 17 of the usual central pi e 10, nor any .unlikenesses otherwise c'ausec by such axial flow with respectto. the heights of liquid columns working in front of the respective inlet-openings '27 between the ed es of the plates 14, and inasmuch as t e liquid pressed out radially through the distributingpassages 2 when striking the inner cylindric al wall of the central pipe 10 will along the whole inlet zone be brought into rotation in the same degree the distributed liquid will in front of each inlet-opening 27 between the receiving edges of the plates have one and the same efl'ective feedingfln'essure height.

In order to obviate, while determining the cross-sections of the distributing-channels of a distributer, special adjusting steps with respect to the ununiformity of" the outflow-pressure, which in the above-described distributcr types occurs when the liquid to be separated during .the axial flow in decreasing quantities per second, and thus at decreasing speed, passes the sections of acylindrical distributer, which sections are of equal size, one may, as is shown in Figs. 3 and 4, provide a body 15 (made in one or more pieces) extending upward into the distributor 1 and being of such shape that the axial sections of the distributor will be decreasing in the direction of l low in such proportion that the radial outflow-pressure height working in each crossscction of the channel will be approximately constant. In Figs. 3 and 4 is shown a device of the said kind which distributes the liquid symmetrically in four directions. The body 15, extending into the distributing-cylindcr l is ol approximately conical shape and may be secured to the cylinder 1 in any convenient manner-for instance, by means of screwthrcads, as shown at8 in Fi 3. Figs. 5 and 6 show a device of similar ind the liquid in one direction only. The body 15 may here have approximately the shape of a diagonallyeut cylinder. For the same purpose the walls of the axial'inlet pipe may, as will be easily understood, be of such shape that the sections are decreasing in the direction of flow. Figs. 7, 8, and 9 show such a distrib-. uter. The dlstributn'ig-passages 2 may be obtained by cross-grooves in thevertical wall olthc distributor l. l

The liquid to be separated should preferably be l'recd from solid or other particles of such form and size that by the same any of distrilniting the distributing-sections would be wholly or partly clogged up.

Having now particularly described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a centrifugal separating-bowl having a liner therein dividing the liquid-space of the bowl into several separatingspaces, and a central orificed pipe; of an orificcd non-rotating distributer in the said central-pipe.

2. In a centrifugal separator, the combination of a separating-bowl having a liner therein dividing the liquid-space of the bowl into several separating-spaces, a central'orificed pipe, and an orificcd non-rotating distributor in the latter having its cross-sectional area dccrcasing in the direction-of flow, substan tially as and for the purpose set forth.

3. In a centrifugal separator. the combination of a separating-bowl having a liner therein dividing the liquid-space of the bowl into several scparating-spaces, a central orificed pipe, a non-rotating distributor in the latter,

and a body arranged in the said distributi-a' for decreasing the cross-sectional area of the latter in the direction of flow, for the purpose set forth.

4. In a centrifugal separator, the combination of a separating-bowl having a liner therein dividing the liquid-space of the bowl into several scparating-spaccs, a central orificcd pipe, a non-rotating distributing-conduit in the latter, and aconical-sharmd body arranged in and fixed with respeet to the distributing-comluit, for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

NTIJS SYENSSON BOK.

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